131154201350021 has 2 divisors, whose sum is σ = 131154201350022. Its totient is φ = 131154201350020.

The previous prime is 131154201349967. The next prime is 131154201350083. The reversal of 131154201350021 is 120053102451131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119276431890625 + 11877769459396 = 10921375^2 + 3446414^2 .

It is a cyclic number.

It is not a de Polignac number, because 131154201350021 - 2²² = 131154197155717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131154201350321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65577100675010 + 65577100675011.

It is an arithmetic number, because the mean of its divisors is an integer number (65577100675011).

Almost surely, 2^{131154201350021} is an apocalyptic number.

It is an amenable number.

131154201350021 is a deficient number, since it is larger than the sum of its proper divisors (1).

131154201350021 is an equidigital number, since it uses as much as digits as its factorization.

131154201350021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 131154201350021 in words is "one hundred thirty-one trillion, one hundred fifty-four billion, two hundred one million, three hundred fifty thousand, twenty-one".